Use -mg_levels_ksp_monitor since mg_levels is the prefix for the levels this will turn monitor for each level and -mg_coarse_ksp_monitor (but note that if the coarse solver is a direct solver this won't have any affect).
Barry > On Jun 11, 2015, at 9:53 AM, David Scott <[email protected]> wrote: > > Thanks for the replies. It seems that the reference to -pc_mg_monitor in > http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/PC/PCMG.html > should be removed. > > David > > On 11/06/2015 15:44, Hong wrote: >> David: >> PETSc library does not have the option '-pc_mg_monitor'. >> Hong >> >> On Thu, Jun 11, 2015 at 6:48 AM, David Scott <[email protected]> wrote: >> Hello, >> >> I am using MINRES with GAMG and have supplied various options >> >> #PETSc Option Table entries: >> -ksp_max_it 500 >> -ksp_monitor_true_residual >> -log_summary >> -mg_levels_ksp_max_it 2 >> -mg_levels_ksp_type chebyshev >> -mg_levels_pc_type sor >> -options_left >> -pc_gamg_agg_nsmooths 1 >> -pc_gamg_threshold 0.03 >> -pc_gamg_type agg >> -pc_gamg_verbose 7 >> -pc_mg_monitor >> #End of PETSc Option Table entries >> There is one unused database option. It is: >> Option left: name:-pc_mg_monitor (no value) >> >> Does this mean that I should have supplied an integer value with >> -pc_mg_monitor or is it not applicable in this case? If I should have >> supplied a value what is the allowed range? >> >> Thanks in advance, >> >> David >> >> >> -- >> The University of Edinburgh is a charitable body, registered in >> Scotland, with registration number SC005336. >> >> > The University of Edinburgh is a charitable body, registered in > Scotland, with registration number SC005336.
